2 * RichEdit - structures and constant
4 * Copyright 2004 by Krzysztof Foltman
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
25 #define _WIN32_IE 0x0400
34 #define NONAMELESSUNION
35 #define NONAMELESSSTRUCT
50 #include "wine/debug.h"
53 extern struct ITextHostVtbl itextHostStdcallVtbl;
56 typedef struct tagME_String
62 typedef struct tagME_Style
66 HFONT hFont; /* cached font for the style */
67 TEXTMETRICW tm; /* cached font metrics for the style */
68 int nRefs; /* reference count */
69 int nSequence; /* incremented when cache needs to be rebuilt, ie. every screen redraw */
74 diTextStart, /* start of the text buffer */
75 diParagraph, /* paragraph start */
76 diCell, /* cell start */
77 diRun, /* run (sequence of chars with the same character format) */
78 diStartRow, /* start of the row (line of text on the screen) */
79 diTextEnd, /* end of the text buffer */
81 /********************* these below are meant for finding only *********************/
82 diStartRowOrParagraph, /* 7 */
83 diStartRowOrParagraphOrEnd,
87 diRunOrParagraphOrEnd, /* 12 */
89 diUndoInsertRun, /* 13 */
90 diUndoDeleteRun, /* 14 */
91 diUndoJoinParagraphs, /* 15 */
92 diUndoSplitParagraph, /* 16 */
93 diUndoSetParagraphFormat, /* 17 */
94 diUndoSetCharFormat, /* 18 */
95 diUndoEndTransaction, /* 19 - marks the end of a group of changes for undo */
96 diUndoPotentialEndTransaction, /* 20 - allows grouping typed chars for undo */
99 #define SELECTIONBAR_WIDTH 8
101 /******************************** run flags *************************/
102 #define MERF_STYLEFLAGS 0x0FFF
103 /* run contains non-text content, which has its own rules for wrapping, sizing etc */
104 #define MERF_GRAPHICS 0x001
105 /* run is a tab (or, in future, any kind of content whose size is dependent on run position) */
106 #define MERF_TAB 0x002
107 /* run is a cell boundary */
108 #define MERF_ENDCELL 0x004 /* v4.1 */
110 #define MERF_NONTEXT (MERF_GRAPHICS | MERF_TAB | MERF_ENDCELL)
112 /* run is splittable (contains white spaces in the middle or end) */
113 #define MERF_SPLITTABLE 0x001000
114 /* run starts with whitespaces */
115 #define MERF_STARTWHITE 0x002000
116 /* run ends with whitespaces */
117 #define MERF_ENDWHITE 0x004000
118 /* run is completely made of whitespaces */
119 #define MERF_WHITESPACE 0x008000
120 /* run is a last (dummy) run in the paragraph */
121 #define MERF_SKIPPED 0x010000
122 /* flags that are calculated during text wrapping */
123 #define MERF_CALCBYWRAP 0x0F0000
124 /* the "end of paragraph" run, contains 1 character */
125 #define MERF_ENDPARA 0x100000
126 /* forcing the "end of row" run, contains 1 character */
127 #define MERF_ENDROW 0x200000
129 #define MERF_HIDDEN 0x400000
130 /* start of a table row has an empty paragraph that should be skipped over. */
131 #define MERF_TABLESTART 0x800000 /* v4.1 */
133 /* runs with any of these flags set cannot be joined */
134 #define MERF_NOJOIN (MERF_GRAPHICS|MERF_TAB|MERF_ENDPARA|MERF_ENDROW)
135 /* runs that don't contain real text */
136 #define MERF_NOTEXT (MERF_GRAPHICS|MERF_TAB|MERF_ENDPARA|MERF_ENDROW)
138 /* those flags are kept when the row is split */
139 #define MERF_SPLITMASK (~(0))
141 /******************************** para flags *************************/
143 /* this paragraph was already wrapped and hasn't changed, every change resets that flag */
144 #define MEPF_REWRAP 0x01
145 #define MEPF_REPAINT 0x02
147 #define MEPF_CELL 0x04 /* The paragraph is nested in a cell */
148 #define MEPF_ROWSTART 0x08 /* Hidden empty paragraph at the start of the row */
149 #define MEPF_ROWEND 0x10 /* Visible empty paragraph at the end of the row */
151 /******************************** structures *************************/
153 struct tagME_DisplayItem;
155 typedef struct tagME_Run
159 int nCharOfs; /* relative to para's offset */
160 int nWidth; /* width of full run, width of leading&trailing ws */
162 int nAscent, nDescent; /* pixels above/below baseline */
163 POINT pt; /* relative to para's position */
164 REOBJECT *ole_obj; /* FIXME: should be a union with strText (at least) */
167 typedef struct tagME_Border
173 typedef struct tagME_BorderRect
181 typedef struct tagME_Paragraph
185 struct tagME_DisplayItem *pCell; /* v4.1 */
186 ME_BorderRect border;
192 int nLastPaintYPos, nLastPaintHeight;
194 struct tagME_DisplayItem *prev_para, *next_para;
197 typedef struct tagME_Cell /* v4.1 */
199 int nNestingLevel; /* 0 for normal cells, and greater for nested cells */
201 ME_BorderRect border;
204 int yTextOffset; /* The text offset is caused by the largest top border. */
205 struct tagME_DisplayItem *prev_cell, *next_cell, *parent_cell;
208 typedef struct tagME_Row
218 /* the display item list layout is like this:
219 * - the document consists of paragraphs
220 * - each paragraph contains at least one run, the last run in the paragraph
221 * is an end-of-paragraph run
222 * - each formatted paragraph contains at least one row, which corresponds
223 * to a screen line (that's why there are no rows in an unformatted
225 * - the paragraphs contain "shortcut" pointers to the previous and the next
226 * paragraph, that makes iteration over paragraphs faster
227 * - the list starts with diTextStart and ends with diTextEnd
230 typedef struct tagME_DisplayItem
233 struct tagME_DisplayItem *prev, *next;
239 ME_Style *ustyle; /* used by diUndoSetCharFormat */
243 typedef struct tagME_UndoItem
247 ME_String *eol_str; /* used by diUndoSplitParagraph */
250 typedef struct tagME_TextBuffer
252 ME_DisplayItem *pFirst, *pLast;
253 ME_Style *pCharStyle;
254 ME_Style *pDefaultStyle;
257 typedef struct tagME_Cursor
259 ME_DisplayItem *pPara;
260 ME_DisplayItem *pRun;
279 typedef struct tagME_FontTableItem {
285 #define STREAMIN_BUFFER_SIZE 4096 /* M$ compatibility */
287 struct tagME_InStream {
288 EDITSTREAM *editstream;
291 char buffer[STREAMIN_BUFFER_SIZE];
293 typedef struct tagME_InStream ME_InStream;
296 #define STREAMOUT_BUFFER_SIZE 4096
297 #define STREAMOUT_FONTTBL_SIZE 8192
298 #define STREAMOUT_COLORTBL_SIZE 1024
300 typedef struct tagME_OutStream {
302 char buffer[STREAMOUT_BUFFER_SIZE];
306 ME_FontTableItem fonttbl[STREAMOUT_FONTTBL_SIZE];
308 COLORREF colortbl[STREAMOUT_COLORTBL_SIZE];
310 UINT nDefaultCodePage;
311 /* nNestingLevel = 0 means we aren't in a cell, 1 means we are in a cell,
312 * an greater numbers mean we are in a cell nested within a cell. */
316 typedef struct tagME_FontCacheItem
324 #define HFONT_CACHE_SIZE 10
326 typedef struct tagME_TextEditor
330 BOOL bEmulateVersion10;
331 ME_TextBuffer *pBuffer;
337 int nTotalLength, nLastTotalLength;
338 int nTotalWidth, nLastTotalWidth;
339 int nAvailWidth; /* 0 = wrap to client area, else wrap width in twips */
342 COLORREF rgbBackColor;
343 HBRUSH hbrBackground;
347 ME_DisplayItem *pUndoStack, *pRedoStack, *pUndoStackBottom;
350 ME_UndoMode nUndoMode;
352 int nLastSelStart, nLastSelEnd;
353 ME_DisplayItem *pLastSelStartPara, *pLastSelEndPara;
354 ME_FontCacheItem pFontCache[HFONT_CACHE_SIZE];
355 int nZoomNumerator, nZoomDenominator;
358 BOOL bDefaultFormatRect;
361 EDITWORDBREAKPROCW pfnWordBreak;
362 LPRICHEDITOLECALLBACK lpOleCallback;
363 /*TEXTMODE variable; contains only one of each of the following options:
364 *TM_RICHTEXT or TM_PLAINTEXT
365 *TM_SINGLELEVELUNDO or TM_MULTILEVELUNDO
366 *TM_SINGLECODEPAGE or TM_MULTICODEPAGE*/
369 BOOL AutoURLDetect_bEnable;
374 DWORD selofs; /* The size of the selection bar on the left side of control */
375 ME_SelectionType nSelectionType;
377 /* Track previous notified selection */
378 CHARRANGE notified_cr;
380 /* Cache previously set scrollbar info */
381 SCROLLINFO vert_si, horz_si;
386 typedef struct tagME_Context
396 /* those are valid inside ME_WrapTextParagraph and related */
398 ME_TextEditor *editor;
402 typedef struct tagME_WrapContext
406 int nLeftMargin, nRightMargin, nFirstMargin;
410 BOOL bOverflown, bWordWrap;
411 ME_DisplayItem *pPara;
412 ME_DisplayItem *pRowStart;
414 ME_DisplayItem *pLastSplittableRun;
415 POINT ptLastSplittableRun;